/**
* Copyright (C) 2006, Laboratorio di Valutazione delle Prestazioni - Politecnico di Milano
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package jmt.gui.jmodel.JGraphMod;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import org.jgraph.graph.CellView;
import org.jgraph.graph.CellViewFactory;
import org.jgraph.graph.GraphLayoutCache;
import org.jgraph.graph.GraphModel;
/**
* An object that defines the view of a graphmodel. This object
* maps between model cells and views and provides a set of methods
* to change these views.
* The view may also contain its own set of attributes and is therefore
* an extension of an Observable, which may be observed by the GraphUI.
* It uses the model to send its changes to the command history.
*
* @author Federico Granata
* Date: 14-lug-2003
* Time: 14.18.17
* Modyfied by Bertoli Marco to support JGraph 5.8 - 21/mar/2006
*/
public class JmtGraphLayoutCache extends GraphLayoutCache {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* Constructs a view for the specified model that uses
* <code>factory</code> to create its views.
*
* @param model the model that constitues the data source
*/
public JmtGraphLayoutCache(GraphModel model, CellViewFactory factory) {
super(model, factory);
}
/**
* Return all cells that intersect the given rectangle.
*/
public CellView[] getRoots(Rectangle clip) {
java.util.List<CellView> result = new ArrayList<CellView>();
CellView[] views = getRoots();
Rectangle2D bounds;
for (CellView view : views) {
bounds = view.getBounds();
if (bounds != null) {
if (bounds.intersects(clip)) {
result.add(view);
}
}
}
views = new CellView[result.size()];
result.toArray(views);
return views;
}
}